Given the $13 trillion of U.S. Government debt in 2010, the dollar was losing out at the time in percentage terms to other currencies as the global reserve currency. To be sure, in absolute terms, there were still more dollars being held abroad than twenty or thirty years earlier, but as a report from Emma Lawson of Morgan Stanley showed, other currencies were taking on more of a relative presence. The lesson concerning excessive public debt was not grasped at least through the 2010's, as the debt continued to increase trillions of dollars more.
The full essay is at "Excessive U.S. Debt: Impact on the Dollar."